Combined handle bar and actuating device for the change-speed gears of motor cycles



Dec. 6, 1927.

O. DEHNE COMBINED HANDLE BAR AND ACTUATING DEVICE FOR THE CHANGE SPEED GEARS 0F MOTOR CYCLES Original Filed 00;- 21, 1924 INVENATOK 0a H0 am-w ATTORN Y Patented Dec. 6, 1927. I

Qumran; STATES" PATENT f oFFIcs] OTTO DEHNE, F SUH L, GERMANY.

COMBINED HANDLE BAR AND ACTUATING DEVICE ron T re C ANGE-sPennenAns or MOTOR oYcLEs, .7 7

Application filed October 2;, 1924,;Seria1 No. 744,880, and in Germany came as,isaa aeiiwe z February 18, 1927.

This invention relates to the changingover of the several speed-steps of the changespeed gear of a motorcycle; the object of the invention is to facilitate that changing- 5 over by an arrangement and combination of parts comprising a bipartite handle-bar, the lefthand and the righthand half of which can be turned relatively to one anothergand means transmitting the movement of the handle-bar halves to the change-speed gear a separate control-bar being now dispensed with so thatboth hands can remain constant- -ly at the handle rod I am aware of the existance of rotary handle-bar grips which are connectedwith the change-speed gearing and by the turning of whichthis gearing is controlled, but their turning-angle is too small for the proper actuation of a normal change-speed gear. I am also aware of the existence of bipartite handle-bars, the halves or arms of which can be turned horizontally, but these halves or arms are not connected with the changespeed gearing. In contradistinction tothese known arrangements and combinations of parts there are, in my new one, the.

handle-bar arms connected with the change proved arrangement the bearing or carriage speed gearing by a transmission member. or members which may be rigid or flexible, that is to say, the motionof' said arms may be transmitted to said gearing bya'rod or rods or by a rope or ropes or an equivalent member or'members; Owing to the present imof the body of the cyclist will be different at 'diflerent speeds of the cycle, and the ar rangement may be such that the body of the cyclist is bent forward more at the higher speeds and less at the lower ones.

In order to cause the handle-bar armsto cover equal angles when being turned inde pendently of the front-wheel iorkshaft they are connected with each other either by rods and'a sliding sleeve, 'or by cogged sectors, or by equivalent means, and they may besecured in their relative position, whichever it may be, by a'pawLdevice adaptedto be operated by hand or by foot, or being connected with the coupling lever or the compression-reducing lever, as best suitedfor the respective type of motor-cycle or as desired or preferred.

My invention is illustrated by way of example in theaccompanyi-ng drawing, in which Fi ure l is a plan of a handlear endi G r- ,tain parts connected therewith; Figure 2 is a similar view showing the same parts in another position; .Figure 3 is a side-view of the partsshown in Fig. 2; Figure 4 is a section through a'pawl-device intended for use in connection with an arrangement of the kind shown in'Figs. 13 and being drawn to an enlarged scale; and Figure 5 is a View also similar to Fig. 1, but showing a; modification.

Referring to Figs. 1-3 a'denotes the-top of the steering fork shaft, 6 Z) the two ban dle-bar arms, and e 6 two rods hinged to f the arms 5 band connected mo'vably with an arm aflixed firmly to the steering-fork shaft a and extending horizontally in the direction to the cyclists seat (notv shown The arm 0 is provided on one side (the left, in the example shown) with several boresf (Figs. 3and 4). The sleeve d can be shoved along on the arm 0, by the intermediary of the rods 6 6 when the handler-bar arms are turned towards one another or away from one another but the sleeve cl can be moved along on the arm 0 only after having been uncoupled from it. The coupling member consists of a bolt 71 that can enter into any of the bores f of the arm 0, and can be withdrawn from that bore in which it is located at the time being by means of a handle-lever shown) near the grip thereof. Thes lever m and the bolt 71 areconnected with one another by a flexible member Z. The bolt-is guided in a small casing h (Fig. 4) screwed into the sleeve d and enclosing a helical spring k which is'compressed when the bolt is withdrawn from the respective bore, whereby the sleeve 1s uncoupled from the arm 6 and the handle-bar arms are free to be turned on the shaft a. The sleeve is also connected with a wire-rope g by means of which the motion and the power are transmltted to the change-speed gearing (not shown) which then is actuated in corre tor 0, the two sectors meshing withone another, as shown, and instead of the two rods c a (Figs.-1 3) amino 0 is hinged to one of the handlebar arms anda rod 0 to the other thereofythe rod sliding in this tube. Instead of the separate sleeve 1] (Figs. 1-3) a collar-like sleeve (1 is see-media the free end of the tube 0. (loneeriiing the. small easing h, the bolt 11 therein and the 1101-014 7 in the rod 0', this is essentially just so as in the first foi'm described and will be elea Without further details; i

What I claim, is In ;a111et0r cyc1e,in combination: a biname to this specification.

partite handle-bar comprising two al'ins adapted to be moved conjointlyin a .ho ri- 1401111111 or nearly hol'lzontnl plane; grips aflixed rigidly t0 enill urine; and 111811115 for transinil'iting the niuvenlenhs of the said ham OTTO DEHNE. 

